The 21st-century successor to 15th-century Venice, this once-impoverished island nation now boasts an income level comparable to the wealthiest Western countries, with a per-capita GDP ahead of most of Europe and Latin America. Singapore Airport is Asia's fifth-largest, and the city's port ranks as the largest container entrepot in the world. Over 6,000 multinational corporations, including 3,600 regional headquarters, are located there, and it was recently ranked No. 1 for ease of doing business.
As the center of the world economy continues to shift from West to East, Hong Kong is certainly reaping the benefits. Hong Kong Shanghai Bank's chief executive recently relocated there from London. Its per-capita GDP is ranked 15th in the world. The Heritage Foundation and The Wall Street Journal have ranked Hong Kong the freest economy in the world.
This well-run metropolis in southern Brazil is famous for its rapid bus-based transit, used by 70% of its residents, and its balanced, diverse economic development strategy. The city's program of building "lighthouses"--essentially electronic libraries--for poorer residents has become a model for developing cities worldwide. Environmental site Grist recently ranked Curitiba the third "greenest" city in the world.